Carbon nanotubes grafted with sulfonated polyacrylamide as a heterogeneous catalyst for the preparation of bis(indolyl)methanes

被引：10

作者：

Boroujeni, Kaveh Parvanak ^{[1
]}

Asadi, Fatemeh ^{[1
]}

Kazemi, Reyhaneh ^{[1
]}

Fadavi, Abdulhamid ^{[2
]}

机构：

[1] Shahrekord Univ, Dept Chem, Shahrekord 115, Iran

[2] Islamic Azad Univ, Marvdasht Branch, Dept Chem, Marvdasht, Iran

来源：

JOURNAL OF NANOPARTICLE RESEARCH | 2019年 / 21卷 / 07期

关键词：

Carbon nanotube; Bis(indolyl)methanes; Heterogeneous catalysis; Polymerizations; Acrylamide; Nanostructured catalysts; SUPPORTED ALUMINUM-CHLORIDE; IONIC LIQUID; RECYCLABLE CATALYST; BIS-INDOLYLMETHANES; RADICAL POLYMERIZATION; EFFICIENT SYNTHESIS; ROOM-TEMPERATURE; HIGHLY EFFICIENT; CONDENSATION; INDOLES;

D O I：

10.1007/s11051-019-4543-0

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Multiwalled carbon nanotubes (MWCNTs) were grafted with poly(AMPS-co-AM) by free-radical polymerization of acrylamide (AM) and 2-acrylamido-2-methylpropane sulfonic acid (AMPS) monomers initiated by benzoyl peroxide (BPO). MWCNT-poly(AMPS-co-AM) was characterized by Fourier transform-infrared spectroscopy (FT-IR), thermal gravimetric analysis (TGA), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and energy dispersive spectroscopy (EDS). Observation showed that grafting of poly(AMPS-co-AM) to MWCNTs improves solubility of MWCNTs in water, ethanol, and dichloromethane. MWCNT-poly(AMPS-co-AM) also showed good catalytic performance for the preparation of bis(indolyl)methanes and 1,8-dioxo-octahydroxanthenes through the condensation of an aldehyde with indole and 5,5-dimethyl-1,3-cycloheanedione (dimedone), respectively. MWCNT-poly(AMPS-co-AM) catalyst can be reusable for at least up to eight times without significant loss of activity.

引用

页数：13

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